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Fixed
Fixed in 6000.0.23f1, 7000.0.0a1
Votes
8
Found in
2023.2.9f1
2023.3.0b6
6000.0.37f1
6000.1.0a7
Issue ID
UUM-63810
Regression
Yes
GameObject's with a Rigidbody2D movement is jittery when Interpolation is turned on
Reproduction steps:
1. Open the attached “BugRepro” project
{color:#de350b}Melv: I attached a project that makes testing easier (especially on Neutron) that compares 2D/3D physics, "IN-67633_MelvNoInteraction". Load it and hit play and it'll automatically move without interaction.{color}
2. Open the “Assets/Scenes/2DScene” Scene
3. Enter The Play Mode
4. Move around using the A and D keys and observe the “2DCharacter” GameObject’s movement
Expected result: The movement is smoothed out by interpolation
Actual result: The movement is jittery
Reproducible with: 2023.1.0a19, 2023.2.9f1, 2023.3.0b6
Not reproducible with: 2021.3.35f1, 2022.3.19f1, 2023.1.0a18
Reproducible on: Windows 11
Not reproducible on: No other environment tested
Comments (4)
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Septuater
Oct 22, 2024 08:14
It works beautifully in 6000.0.23
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Septuater
Oct 02, 2024 12:48
Thank you very much, I can't wait to get my hands on the fixed version!
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MelvMay
Sep 26, 2024 13:43
This issue has been fixed today and will be in a Unity 6 patch release. Note that this issue occurs when the fixed-update interval is consistently higher than the target frame-rate. Having the fixed-update at the same lower interval also removes the issue i.e. target at 30fps and fixed at 30fps.
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Septuater
Sep 24, 2024 08:49
This issue is reproducible on macOS and Android as well, especially in 30fps and lower. The issue doesn't appear for Extrapolation, only Interpolation. I can confirm repro on versions 6000.0.10, 6000.0.18 and 6000.0.20.
I was about to port my game to Unity 6 (current Preview version is really great) but this Interpolation issue makes it almost unplayable on Android devices that will depend greatly on low framerates. I hope you will be able to fix this problem soon.
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Resolution Note (fix version 6000.0.23f1):
Resolved as fixed at 6000.0.24f1.